Dan Gohman b5b6ec6488 FastISel: For calls, prefer using the callee's address as a constant
over having it in a register. And wait until after checking type
legality before requesting that the callee address be placed in a
register. Also, fix support for calls with void return type.

This speeds up fast-isel isel time by about 15% and reduces
instruction counts by about 3% overall on certain testcases. It also
changes many indirect calls to direct calls.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56292 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-17 21:18:49 +00:00
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